During inventory, a medical assistant in a family practice identifies a medication labeled as a Schedule II controlled substance. Which of the following actions would be most appropriate when handling this medication?
Place the medication on an open shelf with other prescription medications but keep an inventory list.
Store the medication under dual control with another staff member and document its use only.
Record the medication in a log book when used and leave it in a secured area accessible to all medical staff.
Secure the medication in a locked cabinet and maintain strict inventory records.